Using Rebar for Concrete Deck Footings
Plain concrete deck foundations without rebar are acceptable under the minimum standards of construction established in the International Residential Code. However, placing reinforcing steel within footings is a relatively easy and inexpensive practice that can provide increased performance. Footings with large bearing areas or unstable soil can benefit from adding rebar to prevent cracking.
When rebar is placed within a footing, it should be completely encased in concrete by a minimum of 3 inches on all sides. When rebar is allowed to project out of the footings, it is susceptible to more rapid corrosion. Over time, rebar allowed to corrode into the footing can weaken the footing, creating areas subject to cracking.
![Rebar In Deck Footing](/media/vcnjrmx1/rebar-in-deck-footing.jpg?format=webp)
Cutting a Concrete Pad
Learn how to use a concrete saw to cut a hole in a patio slab to install a deck footing.
How many footings do I need?
Learn how to determine the number of footings and support posts you need for your deck when designing your deck frame.
Can I reuse existing footings
Our inspector discusses the topic of reusing footings for a new deck.
How to Decorate Deck Support Columns
Browse some examples of decorative deck support posts for tall decks.
Building a Balcony Deck
Learn information about balcony decks that use cantilevered joists that attach to house floor truss systems.
How to Install Wood Deck Support Posts
Installing wood deck posts on top of concrete footings will provide additional support for your deck. We recommend using 6x6 posts due to their strength. Learn how install them at Decks.com.
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Learn how to determine the number of footings and support posts you need for your deck when designing your deck frame.
Can I reuse existing footings
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Deck Bracing
Learn how to install knee bracing in-between your deck support posts to provide extra strength against high winds and to prevent racking forces for tall decks.
Why is Joist Protection so Important for Your Deck?
If you’ve ever seen a piece of wood left out in the weather for any period of time, you know what happens: decay. Whether through wet rot, insect damage, or mildew, the fibers begin to break down.
Deck Joist Cantilever & Overhang Rules
Learn what factors determine the maximum joist cantilever overhang that is allowed.
How to Use a Triple Deck Beam to 6x6 Post Connection
Learn how to use a post beam connector to attach a 3-2x10 beam to a support post for a deck when there isn't enough material on the post to create a notched connection.
Explore Articles by Topic
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Footings
Information related to installing frost footings for decks
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Framing
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Build a covered deck to enjoy all seasons
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Materials
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